Huawei Huawei Certifications H31-311 Questions & Answers

• Question 21:

  Which of the following statements about OTN advantages is incorrect?

  A. The WDM function is used to meet the requirement for Tbit/s bandwidth per fiber.

  B. OTN provides a maximum of five levels of nested or overlapped TCM connection monitoring.

  C. OTN provides powerful outband FEC functions to effectively guarantee the line transmission performance.

  D. OTN provides 2.7 Gbit/s, 10.7 Gbit/s, 43 Gbit/s, and even 111.8 Gbit/s high-rate interfaces.

  Correct Answer: B

• Question 22:

  Which of the following service levels cannot be selected during service configuration?

  A. VC12

  B. VC8

  C. VC4

  D. VC3

  Correct Answer: B

• Question 23:

  Which of following are the configuration modes of new NEs? (Multiple Choice)

  A. Manual configuration

  B. Uploading

  C. Downloading

  D. Copying NE data

  Correct Answer: ABD

• Question 24:

  Some of the SNCP protection switching conditions are default, such as AU-AIS and TU-AIS. Others conditions are optional, such as HP-TIM and HP-SLM. The optional conditions can be flexibly set based on service levels.

  A. TRUE

  B. FALSE

  Correct Answer: A

• Question 25:

  MSP is a network-level protection scheme. The MSP does not directly protect a service, and the MSP switching and restoration are not affected even if there is no service on the MSP ring.

  A. TRUE

  B. FALSE

  Correct Answer: A

• Question 26:

  Which of the following is the basic requirement of a DWDM system on a light source?

  A. The output wavelength is stable.

  B. The direct modulation method is used.

  C. The dispersion tolerance is low.

  D. The transmit power is high.

  Correct Answer: A

• Question 27:

  The interval between two adjacent pointer justification events is at least ( ) frames.

  A. 5

  B. 4

  C. 3

  D. 2

  Correct Answer: C

• Question 28:

  In MSP networking, when optical fibers are connected between sites, the east optical board of a site is connected to the west optical board of the downstream site, and these sites are connected in sequence to form a ring. In this case, the direction from the east optical board of a site to the west optical board of the downstream site is the major ring direction, and the direction that the ring is formed is the service direction.

  A. TRUE

  B. FALSE

  Correct Answer: B

• Question 29:

  Which of the following working windows is indicated by "2" in the optical module parameter L-64.2"?

  A. 880 nm

  B. 1310 nm

  C. 1550 nm

  D. 1510 nm

  Correct Answer: C

• Question 30:

  Which of the following statements about the multiplex section remote error indication (MS-REI) is correct?

  1.

  The B2 byte indicates the transmission channel.

  2.

  The Ml byte indicates the transmission channel.

  3.

  MS-REI is transmitted from the sink to the source.

  4.

  MS-REI is transmitted from the source to the sink.

  5.

  Indicates the number of detected bit errors after the sink receives the MS signals.

  A. 1 , 4 , 5

  B. 2 , 4 , 5

  C. 1 , 3 , 5

  D. 2 , 3 , 5

  Correct Answer: D